My Donut Will Not Bake
Please correct me if I am wrong but, it looks like you have 2 objects and only have one of them selected. One being the doughnut, the second being the icing. In order to bake them you must first Join the 2 meshes together, making one object. Do this by selecting both objects in Object Mode. Shift + Right Mouse Button (provided you use default controls). Then with the mouse in the 3D viewport tap the spacebar to access the search function and type "Join". Select the first option. Both meshes are now one object. Then unwrap them. Once that is done, then you can bake the entire doughnut.